8.3 filename generation \ VOGONS

8.3 filename generation

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First post, by Errius

Posted on 2016-05-29, 15:10

Errius Offline

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How does Windows work out the 4 digit hashes in file names like this:

AEFA0~1 (" a")
AB748~1.B (" a.b")
AB3445~1 (" ab")

Is it just a random number?

"This all reminds me when i took the windows vista sticker thingy off my old laptop, and on my washing machine as a joke. A few days later said washing machine stopped working. I still think this cannot be a coincidence."

Reply 1 of 2, by Stiletto

Posted on 2016-05-30, 09:26

Stiletto Offline

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Nope!

(Note: the hash is only found in NT-based OS's)

Read:
http://stackoverflow.com/questions/31526206/h … ated-in-windows
http://stackoverflow.com/questions/11639446/w … same-first-6-ch

Reverse-engineered:
https://usn.pw/blog/gen/2015/06/09/filenames/

"I see a little silhouette-o of a man, Scaramouche, Scaramouche, will you
do the Fandango!" - Queen

Stiletto

Reply 2 of 2, by Errius

Posted on 2016-05-30, 11:23

Errius Offline

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Posts: 3022
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Location: Lave Station

Stiletto wrote:
https://usn.pw/blog/gen/2015/06/09/filenames/

Thanks. This was clever detective work. I like the way he created 10 million files to test the Windows routine.

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